I had the same experience; the first chameleon I had was a veiled a long, long time ago. I had no dripper but rather a plastic box with standing water at the bottom of his enclosure (I had 2 and would swap/clean every day or so). His enclosure also had a huge live plant, which I misted every morning. Oddly I never saw him drinking from the misting drops, but rather at the standing water. He ended up passing away at 8 years and 7 months from what I believe to have been cancer. I laugh sometimes when I see people say “standing water will kill your chameleon or whatever,” not because they’re wrong but because you have to be pretty damn careless to actually let standing water accumulate a bacterial gradient that will actually kill your chameleon, even if they poop in it. Obviously standing water had other inherent problems, but people seem to fixate on the idea that standing water = death sentence.
Disclaimer* before people start attacking me, I’m not defending standing water. I use mistkings now, have raised parsons successfully, and recognize that my first veiled may have been lucky surviving that long with standing water. That being said, I still think that cup with water, etc., if cleaned and managed properly, is better than nothing especially if your Cham is super dehydrated.